PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-08:27:50
G08     265.1          17.2                5.7 +/-    1.71      13.5 +/-    1.71  0.030 / 0.030
G10     67.3           56.2                4.4 +/-    0.47       5.2 +/-    0.47  0.030 / 0.020
G11     309.3          19.2                2.9 +/-    1.42       6.5 +/-    1.42  0.240 / 0.350
G14     273.7          68.4                4.5 +/-    0.79       4.8 +/-    0.79  0.170 / 0.310
G18     310.3          35.7                4.2 +/-    1.00       6.5 +/-    1.00  0.190 / 0.330
G20     98.2           34.6                5.0 +/-    0.94       8.0 +/-    0.94  0.310 / 0.360
G21     155.1          12.0                4.0 +/-    2.65      10.6 +/-    2.65  0.100 / 0.150
G27     231.0          14.7                4.6 +/-    1.73      11.5 +/-    1.73  0.080 / 0.220
G31     177.8          32.9                5.3 +/-    2.08       8.8 +/-    2.08  0.040 / 0.060
G32     332.0          73.8                5.1 +/-    0.60       5.2 +/-    0.60  0.040 / 0.060